Cita APA (7th ed.)

Ogg, F. A., & Ray, P. O. (1947). Essentials of american government (5a. ed.). Appleton-Century-Crofts.

Cita Chicago (17th ed.)

Ogg, Frederic A., i P. Orman Ray. Essentials of American Government. 5a. ed. Nueva York: Appleton-Century-Crofts, 1947.

Cita MLA (9th ed.)

Ogg, Frederic A., i P. Orman Ray. Essentials of American Government. 5a. ed. Appleton-Century-Crofts, 1947.